CN102931729B - Method and device for maintaining redundant channel of power distribution terminal - Google Patents
Method and device for maintaining redundant channel of power distribution terminal Download PDFInfo
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- CN102931729B CN102931729B CN201210428697.3A CN201210428697A CN102931729B CN 102931729 B CN102931729 B CN 102931729B CN 201210428697 A CN201210428697 A CN 201210428697A CN 102931729 B CN102931729 B CN 102931729B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/128—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment involving the use of Internet protocol
Abstract
The invention discloses a method and device for maintaining a redundant channel of a power distribution terminal. The power distribution terminal is respectively connected with a plurality of control stations. A plurality of logic connections built by each control station are used as one redundant group. The method includes that the logic connections write corresponding internet protocol (IP) addresses into corresponding extensible markup language (XML) files, and the power distribution terminal reads the XML files, builds data bases and tasks and sets up a preset port. When the logic connections of the control stations arrive, the IP addresses corresponding to the logic connections are obtained, and the logic connections are distributed to corresponding tasks. The control stations start testing messages of the logic connections and scan all logic connections in the redundant groups belonging to the logic connections. Whether main connections exist in the redundant groups belonging to the logic connections is judged, on yes judgment, the main connections are disconnected, main connection marks are removed, and new main connections are rebuilt; on no judgment, the logic connections are used as the main connections, main connection marks are set, and the main connections communicate normally. By means of the scheme, the reliability and availability of data communication are improved.
Description
Technical field
The present invention relates to the distribution communications field, relate in particular to maintaining method and the device of a kind of distribution terminal redundant channel.
Background technology
Telemechanical communication is the key link of distribution automation system, its communication reliable and stable extremely important.Wherein, telemechanical communication as the term suggests be with telemechanical apparatus between communicate by letter, and telemechanical apparatus is in order to complete the collection of various information between control station and distribution terminal and to carry out in real time the automatics of automatic transmission and exchange.
For realizing reliable application data transmission, telemechanical communication port can be designed as redundant mode; This redundant mode is mutually corresponding with non-redundant mode, for a kind of selection of the reliability that multiple duplication increases system is provided.
At present, telemechanical communication redundancy mainly embodies a concentrated reflection of as the passage redundancy under the redundancy between the redundancy between serial-port, serial-port and network channel, complete network service condition.Along with network service becomes the major way of distribution automation system gradually, the redundancy day of network channel is aobvious important.
In addition, distribution terminal redundant channel is relatively few, mostly relies on hardware redundancy design, and it safeguards simple.And do not support a plurality of control stations to access a distribution terminal simultaneously, a control station can not be set up a plurality of logics connections simultaneously, thereby has affected reliability and the availability of data communication.
Summary of the invention
The technical problem to be solved in the present invention is, for prior art, affects the reliability of data communication and the defect of availability, and a kind of maintaining method and device of distribution terminal redundant channel of the reliable impatient availability that improves data communication is provided.
The technical solution adopted for the present invention to solve the technical problems is: the maintaining method of constructing a kind of distribution terminal redundant channel, described distribution terminal is connected with a plurality of control stations respectively, a plurality of logics that each control station is set up connect as a redundancy group, said method comprising the steps of:
S1. described in each, logic connection writes respectively corresponding XML file by its corresponding IP address, and the number of supposing control station is m, and the number that the logic that each control station is set up connects is n, and wherein, m and n are natural number;
S2. described distribution terminal reads described XML file, and according to m database of described XML file set up and m*n task, wherein, the corresponding redundancy group of each database, each task comprises database and the main connection sign of its corresponding IP address, affiliated redundancy group, correspondence;
S3., default port is set;
S4. the logic of obtaining this arrival when the logic of described control station connects arrival connects corresponding IP address, and the logic of this arrival is connected and is dispensed in corresponding task;
S5. described control station starts the test packet that the logic of this arrival connects, and the logic that scans this arrival connect under all logics in redundancy group connect;
S6. judge in described affiliated redundancy group whether have main connection, if so, perform step S7; If not, perform step S8;
S7. disconnect main connection, and remove main connection sign, then perform step S8;
S8. the logic of this arrival is connected as main connection, and main connection sign is set, then described main connection communicates.
Preferably, described step S8 also comprises:
If there is communication abnormality in described main connection, disconnect described main connection, and remove described main connection sign, then wait for that described control station starts the standby connection in redundancy group, wherein, the described standby logic connection that described control station acquiescence is set up that is connected to.
Preferably, described standby connection is monitored its connection status by test frame.
Preferably, described standby connection is monitored its connection status by test frame and is comprised:
A. under communication idle condition, whether judgement recipient in the first Preset Time receives the test packet that starts described standby connection, if so, performs step B1, if not, performs step B2.
B1. in the second Preset Time, to transmit leg, reply the order of confirming to receive described test packet;
B2. disconnect described standby connection.
Preferably, described transmit leg is control station or distribution terminal.
The present invention also constructs the attending device of a kind of distribution terminal redundant channel, and described distribution terminal is connected with a plurality of control stations respectively, and a plurality of logics that each control station is set up connect as a redundancy group, and described device comprises:
Address writing module, connects its corresponding IP address is write respectively to corresponding XML file for logic described in each, and the number of supposing control station is m, and the number that the logic that each control station is set up connects is n, and wherein, m and n are natural number;
Set up module, be connected with described address writing module, for described distribution terminal, read described XML file, and according to m database of described XML file set up and m*n task, wherein, the corresponding redundancy group of each database, each task comprises database and the main connection sign of its corresponding IP address, affiliated redundancy group, correspondence;
Module is set, is connected with the described module of setting up, for default port is set;
Acquisition module, is connected with the described module that arranges, and the logic of obtaining this arrival while connecting arrival for the logic at described control station connects corresponding IP address, and the logic of this arrival is connected and is dispensed in corresponding task;
Scan module, is connected with described acquisition module, and described control station starts the test packet that the logic of this arrival connects, and the logic that scans this arrival connect under all logics in redundancy group connect;
Judge module, is connected with described scan module, for judging whether described affiliated redundancy group has main connection;
Disconnect module, be connected with described judge module, for disconnecting main connection, and remove main connection sign, then re-establish main connection;
Communication module, is connected with described judge module, for the logic of this arrival is connected as main connection, and main connection sign is set, and described main connection is communicated.
Preferably, described device also comprises the standby link block being connected with described communication module, wherein,
Described standby link block, for disconnect described main connection when communication abnormality has appearred in described main connection, and remove described main connection sign, then wait for that described control station starts the standby connection in redundancy group, wherein, the described standby logic connection that described control station acquiescence is set up that is connected to.
Preferably, described standby connection is monitored its connection status by test frame.
Preferably, described standby connection is monitored its connection status by test frame and is comprised:
Under communication idle condition, if recipient receives the test packet that starts described standby connection in the first Preset Time, in the second Preset Time, to transmit leg, reply the order of confirming to receive described test packet, if recipient does not receive the test packet that starts described standby connection in the first Preset Time, disconnect described standby connection.
Preferably, described transmit leg is control station or distribution terminal.
Implement technical scheme of the present invention, there is following beneficial effect: this technical scheme supports a plurality of control stations to access a distribution terminal simultaneously, and a control station can be set up a plurality of logics connections, and this logic is connected and effectively safeguarded, thereby reliability and the availability of data communication have been improved.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing:
Fig. 1 is the flow chart of the maintaining method of distribution terminal of the present invention redundant channel;
Fig. 2 is that the flow chart of its connection status is monitored in the standby connection of the present invention by test frame;
Fig. 3 is the structural representation of the attending device of distribution terminal of the present invention redundant channel.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
Refer to Fig. 1, Fig. 1 is the flow chart of the maintaining method of distribution terminal of the present invention redundant channel; As shown in Figure 1, described distribution terminal is connected with a plurality of control stations respectively, and a plurality of logics that each control station is set up connect as a redundancy group, said method comprising the steps of:
In step S1, described in each, logic connection writes respectively corresponding XML(extend markup language by its corresponding IP address, Extensible Markup Language) file, be that each logic connects corresponding 1 XML file, the number of supposing control station is m, the number that the logic of each control station connects is n, and wherein, m and n are natural number; It should be noted that this XML file can flag data and definition data type, those skilled in the art should understand, and does not repeat them here.
In step S2, described distribution terminal reads described XML file, and according to m database of described XML file set up and m*n task, wherein, the corresponding redundancy group of each database, each task comprises database and the main connection sign of its corresponding IP address, affiliated redundancy group, correspondence.
In step S3, default port is set, in the present embodiment, this default port is 2404, wherein this 2404 port need to be confirmed by IANA (The Internet Assigned Numbers Authority, the Internet digital distribution mechanism).
In step S4, the logic of obtaining this arrival when the logic of described control station connects arrival connects corresponding IP address, and the logic of this arrival is connected and is dispensed in corresponding task.
In step S5, described control station starts the test packet that the logic of this arrival connects, and the logic that scans this arrival connect under all logics in redundancy group connect.
In step S6, judge in described affiliated redundancy group whether have main connection, if so, perform step S7; If not, perform step S8, should be noted that, in each redundancy group, have a plurality of logics to connect, and in these a plurality of logics connections, some is main connection, some is standby connection, main connection is the logic connection that preferential selection connects, and those skilled in the art should understand, and does not repeat them here.
In step S7, disconnect main connection, and remove main connection sign, then re-establish new main connection.
In step S8, the logic of this arrival is connected as main connection, and main connection sign is set, then proper communication is carried out in described main connection.
It should be noted that described step S8 also comprises:
If there is communication abnormality in described main connection, disconnect described main connection, and remove described main connection sign, then wait for that described control station starts the standby connection in redundancy group, wherein, the described standby logic connection that described control station acquiescence is set up that is connected to, wherein, described standby connection is monitored its connection status by test frame.
Incorporated by reference to consulting Fig. 2, Fig. 2 is that the flow chart of its connection status is monitored in the standby connection of the present invention by test frame, and as shown in Figure 2, described standby connection is monitored its connection status by test frame and comprised:
In steps A, under communication idle condition, whether judgement recipient in the first Preset Time receives the test packet that starts described standby connection, if so, performs step B1, if not, performs step B2, and wherein, this first Preset Time can be set voluntarily.In the present embodiment, this first Preset Time is 20s.
In step B1, in the second Preset Time, to transmit leg, reply the order of confirming to receive described test packet; Wherein, this second Preset Time can be set voluntarily.In the present embodiment, this second Preset Time is 15s, and described transmit leg is control station or distribution terminal, that is to say, control station and distribution terminal can send test packet, do not repeat them here.
In step B2, disconnect described standby connection.
Refer to Fig. 3, Fig. 3 is the structural representation of the attending device of distribution terminal of the present invention redundant channel, and as shown in Figure 3, described device comprises:
Address writing module 1, connects its corresponding IP address is write respectively to corresponding XML file for logic described in each, and each logic connects corresponding 1 XML file, the number of supposing control station is m, the number that the logic of each control station connects is n, and wherein, m and n are natural number;
Set up module 2, be connected with described address writing module 1, for described distribution terminal, read described XML file, and according to m database of described XML file set up and m*n task, wherein, each task comprises database and the main connection sign of its corresponding IP address, affiliated redundancy group, correspondence;
Module 3 is set, is connected with the described module 2 of setting up, for default port is set;
Acquisition module 4, is connected with the described module 3 that arranges, and the logic of obtaining this arrival while connecting arrival for the logic at described control station connects corresponding IP address, and the logic of this arrival is connected and is dispensed in corresponding task;
Scan module 5, is connected with described acquisition module 4, and described control station starts the test packet that the logic of this arrival connects, and the logic that scans this arrival connect under all logics in redundancy group connect;
Judge module 6, is connected with described scan module 5, for judging whether described affiliated redundancy group has main connection;
Disconnect module 71, be connected with described judge module 6, for disconnecting main connection, and remove main connection sign, then re-establish new main connection;
Communication module 72, is connected with described judge module 6, the logic of this arrival is connected as main connection, and main connection sign is set, and then proper communication is carried out in described main connection.
Described standby link block 8, be connected with described communication module 72, if there is communication abnormality for described main connection, disconnect described main connection, and remove described main connection sign, then wait for that described control station starts the standby connection in redundancy group, wherein, the described standby logic connection that described control station acquiescence is set up that is connected to.It should be explained that, if proper communication is carried out in main connection, this standby link block 8 can be saved, and does not repeat them here.
This technical scheme supports a plurality of control stations to access a distribution terminal simultaneously, and control station can set up a plurality of logics and connect, and this logic is connected and effectively safeguarded, thereby has improved reliability and the availability of data communication.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in claim scope of the present invention.
Claims (10)
1. a maintaining method for distribution terminal redundant channel, is characterized in that, described distribution terminal is connected with a plurality of control stations respectively, and a plurality of logics that each control station is set up connect as a redundancy group, said method comprising the steps of:
S1. described in each, logic connection writes respectively corresponding XML file by its corresponding IP address, and the number of supposing control station is m, and the number that the logic that each control station is set up connects is n, and wherein, m and n are natural number;
S2. described distribution terminal reads described XML file, and according to m database of described XML file set up and m*n task, wherein, the corresponding redundancy group of each database, each task comprises database and the main connection sign of its corresponding IP address, affiliated redundancy group, correspondence;
S3., default port is set;
S4. the logic of obtaining this arrival when the logic of described control station connects arrival connects corresponding IP address, and the logic of this arrival is connected and is dispensed in corresponding task;
S5. described control station starts the test packet that the logic of this arrival connects, and the logic that scans this arrival connect under all logics in redundancy group connect;
S6. judge in described affiliated redundancy group whether have main connection, if so, perform step S7; If not, perform step S8;
S7. disconnect main connection, and remove main connection sign, then perform step S8;
S8. the logic of this arrival is connected as main connection, and main connection sign is set, then described main connection communicates.
2. method according to claim 1, is characterized in that, described step S8 also comprises:
If there is communication abnormality in described main connection, disconnect described main connection, and remove described main connection sign, then wait for that described control station starts the standby connection in redundancy group, wherein, the described standby logic connection that described control station acquiescence is set up that is connected to.
3. method according to claim 2, is characterized in that, described standby connection is monitored its connection status by test frame.
4. method according to claim 3, is characterized in that, described standby connection is monitored its connection status by test frame and comprised:
A. under communication idle condition, whether judgement recipient in the first Preset Time receives the test packet that starts described standby connection, if so, performs step B1, if not, performs step B2;
B1. in the second Preset Time, to transmit leg, reply the order of confirming to receive described test packet;
B2. disconnect described standby connection.
5. method according to claim 4, is characterized in that, described transmit leg is control station or distribution terminal.
6. an attending device for distribution terminal redundant channel, is characterized in that, described distribution terminal is connected with a plurality of control stations respectively, and a plurality of logics that each control station is set up connect as a redundancy group, and described device comprises:
Address writing module, connects its corresponding IP address is write respectively to corresponding XML file for logic described in each, and the number of supposing control station is m, and the number that the logic that each control station is set up connects is n, and wherein, m and n are natural number;
Set up module, be connected with described address writing module, for described distribution terminal, read described XML file, and according to m database of described XML file set up and m*n task, wherein, the corresponding redundancy group of each database, each task comprises database and the main connection sign of its corresponding IP address, affiliated redundancy group, correspondence;
Module is set, is connected with the described module of setting up, for default port is set;
Acquisition module, is connected with the described module that arranges, and the logic of obtaining this arrival while connecting arrival for the logic at described control station connects corresponding IP address, and the logic of this arrival is connected and is dispensed in corresponding task;
Scan module, is connected with described acquisition module, and described control station starts the test packet that the logic of this arrival connects, and the logic that scans this arrival connect under all logics in redundancy group connect;
Judge module, is connected with described scan module, for judging whether described affiliated redundancy group has main connection;
Disconnect module, be connected with described judge module, for disconnecting main connection, and remove main connection sign, then re-establish main connection;
Communication module, is connected with described judge module, for the logic of this arrival is connected as main connection, and main connection sign is set, and described main connection is communicated.
7. device according to claim 6, is characterized in that, described device also comprises the standby link block being connected with described communication module, wherein,
Described standby link block, for disconnect described main connection when communication abnormality has appearred in described main connection, and remove described main connection sign, then wait for that described control station starts the standby connection in redundancy group, wherein, the described standby logic connection that described control station acquiescence is set up that is connected to.
8. device according to claim 7, is characterized in that, described standby connection is monitored its connection status by test frame.
9. device according to claim 8, is characterized in that, described standby connection is monitored its connection status by test frame and comprised:
Under communication idle condition, if recipient receives the test packet that starts described standby connection in the first Preset Time, in the second Preset Time, to transmit leg, reply the order of confirming to receive described test packet, if recipient does not receive the test packet that starts described standby connection in the first Preset Time, disconnect described standby connection.
10. device according to claim 9, is characterized in that, described transmit leg is control station or distribution terminal.
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| CN201210428697.3A CN102931729B (en) | 2012-11-01 | 2012-11-01 | Method and device for maintaining redundant channel of power distribution terminal |
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| CN201210428697.3A CN102931729B (en) | 2012-11-01 | 2012-11-01 | Method and device for maintaining redundant channel of power distribution terminal |
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| EP2273644A1 (en) * | 2009-07-07 | 2011-01-12 | ABB Research Ltd. | Substation automation system with protection functions |
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| CN102290862A (en) * | 2011-08-16 | 2011-12-21 | 航天科工深圳（集团）有限公司 | Peer to peer communication method and system of power distribution terminals |
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